Advertisement

Topics

A comparative study of bulk-fill composites: degree of conversion, post-gel shrinkage and cytotoxicity.

07:00 EST 8th March 2018 | BioPortfolio

Summary of "A comparative study of bulk-fill composites: degree of conversion, post-gel shrinkage and cytotoxicity."

Bulk-fill composites are claimed to be restorative materials used in deep preparations and effectively photoactivated in layers up to 4 mm. The aim of the present study was to evaluate the degree of conversion, post-gel volumetric shrinkage, and cytotoxicity of six bulk-fill and two conventional composites. Degree of conversion was determined by FTIR spectroscopy; post-gel volumetric shrinkage was determined using the strain gauge method; and cytotoxicity in human fibroblasts was evaluated indirectly by the MTT assay. Data were subjected to one-way ANOVA/Tukey's test (α = 0.05). All materials, including bulk-fill and conventional composites, were classified as non-toxic, with cell viability higher than 70%. Bulk-fill composites exhibited volumetric shrinkage similar to or lower (1.4 to 0.4%) than that of conventional composites (1.7-2.1%). However, only four of the bulk-fill composites were able to sustain a homogeneous conversion at the 4-mm depth. Despite their non-toxicity and shrinkage similar to that of conventional materials, not all commercial bulk-fill materials were able to maintain a conversion as high as 80% of the superficial layer, at the 4-mm depth, indicating some failure in the bulk-fill design of some commercial brands. Therefore, the use of bulk-fill materials in dental practice is advantageous, but special attention should be given to the selection and correct use of the materials.

Affiliation

Journal Details

This article was published in the following journal.

Name: Brazilian oral research
ISSN: 1807-3107
Pages: e17

Links

DeepDyve research library

PubMed Articles [20492 Associated PubMed Articles listed on BioPortfolio]

Incremental and Bulk-fill Techniques With Bulk-fill Resin Composite in Different Cavity Configurations.

To compare the microtensile bond strengths of incremental and bulk-fill techniques under different C-factor and compliance conditions.

Effect of high-intensity curing lights on the polymerization of bulk-fill composites.

The purpose of this study was to investigate the effect of high-irradiance light-curing-units (LCUs) on the depth-of-cure (DoC) and degree-of-polymerization (DoP) of bulk-fill composites (BFCs).

Effect of Thickness on Light Transmission and Vickers Hardness of Five Bulk-fill Resin-based Composites Using Polywave and Single-peak Light-emitting Diode Curing Lights.

This study compared light transmission through different thicknesses of bulk-fill resin-based composites (RBCs) using a polywave and a single-peak light-emitting diode light-curing unit (LCU). The eff...

Polymerization Shrinkage of Bulk Fill Composites and its Correlation with Bond Strength.

The present study aimed to evaluates polymerization shrinkage (PS) using microcomputed tomography (μCT) and microtensile bond strength (μTBS) in bulk fill composites (BFC) and conventional class I r...

Evaluation of bulk-fill systems: microtensile bond strength and non-destructive imaging of marginal adaptation.

The objective of this study was to investigate microtensile bond strength (MTBS) and interfacial adaptation (IA) of bulk-fill restorative systems bonded to dentin in Class-I-preparations. Box-shaped p...

Clinical Trials [6263 Associated Clinical Trials listed on BioPortfolio]

Clinical Performance of Two Bulk-Fill Composite of Posterior Restorations

To minimize the effects of polymerization shrinkage in the restorative treatment, there are new composites called Bulk- Fill which the companies has developed this composites for example T...

A 24-month Clinical Evaluation of Different Bulk-fill Restorative Resins in Class II Restorations

The aim of this study is to evaluate the clinical performance of three different bulk-fill restorative resin materials; a bulk fill resin composite, a flowable bulk fill resin composite an...

Clinical Evaluation of Bulk-fill vs Layered Composite Resin in Class I and II Posterior Restorations

The aim of this study is to evaluate the clinical performance of Filtek Bulk Fill Posterior Restorative in Class I and Class II restorations compared to the conventional incremental techni...

Clinical Investigation of a New Bulk Fill Composite Resin in the Restoration of Posterior Teeth

Polymerization shrinkage remains one of the primary disadvantages of composite resin restorative materials (tooth-colored fillings). To minimize the effects of polymerization shrinkage in ...

Clinical Evaluation of Bulk Fill Composite Restorations Associated to Universal Adhesive System

Treatment clinical trial, randomized, controled, parallel, double-blinded, with four groups, that aims to evaluate the best application strategy when using a Universal Adhesive system, Sin...

Medical and Biotech [MESH] Definitions

The study of the similarities and differences in the structures of homologous tissues across various species.

Comparison of outcomes, results, responses, etc for different techniques, therapeutic approaches or other inputs.

The comparative study of animal structure with regard to homologous organs or parts. (Stedman, 25th ed)

The total area or space visible in a person's peripheral vision with the eye looking straightforward. The average extent is about 65 degree upward, 75 degree downward, 60 degree inward, and 95 degree outward. Visual fields can be measured by PERIMETRY.

Syndromes which feature DYSKINESIAS as a cardinal manifestation of the disease process. Included in this category are degenerative, hereditary, post-infectious, medication-induced, post-inflammatory, and post-traumatic conditions.

Advertisement
Quick Search
Advertisement
Advertisement

 


DeepDyve research library

Relevant Topics

Assays
An assay is an analytic procedure for qualitatively assessing or quantitatively measuring the presence or amount or the functional activity of a target entity.  This can be a drug or biochemical substance or a cell in an organism or organic sample. ...

Dentistry
Dentistry is the study, management and treatment of diseases and conditions affecting the mouth, jaw, teeth and their supporting tissues (Oxford Medical Dictionary) The work of a dentist ranges from regular patient check-up to orthodontics and surgery....


Searches Linking to this Article